<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区 -->
      <div class="avatar_box">
          <img src="../assets/logo.png" />
      </div>
      <!-- 表单区 -->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" class="login_form" label-width="0px">
          <!-- 用户名 -->
        <el-form-item prop="username">
            <el-input v-model="loginForm.username" prefix-icon="iconfont icon-yonghu"></el-input>
        </el-form-item>
          <!-- 密码 -->
          <el-form-item prop="password">
            <el-input  v-model="loginForm.password" type='password' prefix-icon="iconfont icon-tianchongxing-"></el-input>
        </el-form-item>
          <!-- 按钮区域 -->
        <el-form-item class="btns">
            <el-button type="primary" @click="login">登录</el-button>
            <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 表单验证规则对象
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: '请输入用户名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetLoginForm () {
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return
        const { data: rs } = await this.$http.post('login', this.loginForm)
        if (rs.meta.status !== 200) {
          return this.$message.error('登录失败')
        }
        console.log(rs)
        window.sessionStorage.setItem('token', rs.data.token)
        this.$message.success('登录成功')
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
    .login_container {
        background-color: #2b4b6b;
        height: 100%;
    }
    .login_box {
        width: 450px;
        height: 300px;
        background-color: #fff;
        border-radius: 3px;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%,-50%);
    }
    .avatar_box {
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position:absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        background-color: #fff;
        img {
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }
    }
    .login_form {
        position:absolute;
        bottom: 0;
        width: 100%;
        padding: 0 20px;
        box-sizing: border-box;
    }
    .btns {
        display: flex;
        justify-content: flex-end;
    }
</style>
